中文摘要：

采用人工降雨的方法，研究降雨强度、降雨动能与雨滴击溅产生溅蚀量的关系，同时分析溅蚀量的距离分布特征，以期深入探究雨滴溅蚀的发生发展过程。结果表明：（i）在雨滴击溅侵蚀中，下坡方向的溅蚀量最大，显著高于上坡方向的溅蚀量；侧坡方向的溅蚀量次之，上坡方向的溅蚀量最小。溅蚀总搬运量和净搬运量均与降雨强度呈显著的正相关关系。（2）溅蚀量与降雨强度呈正的指数函数关系；与降雨动能呈正的线性函数关系。两个降雨参数均能良好的反映降雨对雨滴击溅侵蚀的影响。（3）溅蚀土粒分布在距离样地0～80cm内，其中61％～75％的土粒分布在0～20cm内。溅蚀量随着溅蚀距离的增大而减小，两者呈指数函数关系。

英文摘要：

A sprinkler with splash trays was used to find out the relationship between the amount of splashed soil particles and different rainfall parameters, and the distance distribution of splashed soil particles was also tested. The splashed soil particles were collected by four splash trays set around each study plot. The result indicated that during the splash erosion, the quantity of splashed soil particles in down slope had a significant larger amount than that in up slope, while the quantity of splashed soil particles in up slope was the smallest of all the four directions. The amount of total splashed particles and net splashed particles were all positively related to rainfall intensity. The quantity of splashed soil particles positively exponentially increased with in- creasing rainfall intensity. And a linear function could show the relationship between the quantity of splashed soil particles and rainfall kinetic energy. The high correlation coefficients indicated that both of two rainfall parameters could be used for future studying of splash erosion in this area. The splashed particles splashed across the whole splash device up to 80 cm from the source. The percentage of the splashed fragments dis- tribute in 20 cm up to the plot was from 61 to 75. The quantity of splashed particles exponentially decreased with increasing the distance